Classification
The amount of time given to each player to complete their moves will vary from game to game. However most games tend to change the classification of tournaments according to the length of time given to the players. Shorter time limits, which do not afford due consideration to moves, are afforded a lesser degree of importance. Indeed shorter limits are normally given special names to distinguish them.
'Lightning' is the quickest limit, then 'blitz'. Chess has an 'active' category after this. In chess, Lightning refers to 3 minutes or below, blitz refers to between 4 and 15 minutes, and Active is between 15 and 30. By way of contrast, for Go anything under twenty minutes could be considered blitz. In terms of chess ratings, 30 minutes is considered to be both blitz (fast chess) and long (slow chess) at the same time as it affects both ratings.
Read more about this topic: Time Control